MORE than 200 teachers, mostly in the biology discipline, gained in-depth knowledge of the conservation of endangered species at a seminar held recently. The seminar was jointly organised by the Agriculture and Fisheries Department (AFD), the Education Department and the Urban Services Department's Hong Kong Science Museum. An AFD spokesman said the seminar was aimed at enhancing teachers' awareness and understanding of the protection of endangered animal and plant species. ''It is hoped that students would play a more crucial role in conserving the territory's endangered species after being briefed by their teachers on the subject.'' The spokesman also said the AFD and other government departments, the Customs and Excise in particular, had been effectively carrying out enforcement work in relation to the Animals and Plants (Protection of Endangered Species) Ordinance. ''The Government will continue its enforcement operations and public education programmes with the hope to make Hong Kong a territory which strictly complies with the convention on international trade in endangered species of wild fauna and flora.'' World Wide Fund for Nature (Hong Kong) executive director David Melville and senior lecturer at the Chinese University of Hong Kong Paul But spoke on the protection of endangered animals and plants, respectively, at the seminar. AFD's conservation officer So Ping-man gave a detailed account of the implementation of the relevant law in Hong Kong. The seminar was part of the Government's publicity and education campaign on the conservation of endangered species. Other programmes included the display of posters at Kowloon-Canton Railway stations and the distribution of stickers to Chinese medicinal retail shops to remind them not to sell endangered items.